| | Hebron, IL | Sterling, IL | United States |
| Population | 1,540 | 14,919 | 329,725,481 |
| Female Population | 52.4% | 48.5% | 50.5% |
| Male Population | 47.6% | 51.5% | 49.5% |
| Median Age | 36 | 42.7 | 38.4 |
| space3 | | | |
| Population - 2010 | 1,200 | 15,412 | 309,327,143 |
| Population - 2000 | 1,038 | 15,451 | 285,036,114 |
| Population - 1990 | 809 | 15,132 | 251,960,433 |
| Pop. 2000 to Now | 13.2% | -7.4% | 15.6% |
| Pop. 1990 to Now | 45.2% | -5.4% | 30.8% |
| space4 | | | |
| Population Density | 789.7 | 2,554.6 | 93.4 |
| Land Area | 2.0 | 5.8 | 3,531,905.4 |
| Water Area | 0.0 | 0.2 | 264,836.8 |
| space | | | |
| Est. Total Population By Age | | | |
| | Hebron, IL | Sterling, IL | United States |
| Age 0 to 4 | 6.0% | 4.2% | 5.9% |
| Age 5 to 9 | 4.6% | 6.5% | 6.1% |
| Age 10 to 14 | 10.8% | 6.0% | 6.6% |
| Age 15 to 17 | 4.2% | 3.5% | 3.9% |
| Age 18 to 20 | 4.8% | 4.4% | 4.0% |
| Age 21 to 24 | 6.9% | 5.8% | 5.2% |
| Age 25 to 34 | 11.1% | 12.2% | 13.8% |
| Age 35 to 44 | 9.4% | 11.8% | 12.9% |
| Age 45 to 54 | 17.6% | 13.1% | 12.6% |
| Age 55 to 59 | 6.2% | 7.0% | 6.7% |
| Age 60 to 64 | 7.7% | 5.2% | 6.3% |
| Age 65 to 74 | 8.0% | 10.5% | 9.6% |
| Age 75 to 84 | 1.4% | 5.8% | 4.5% |
| Age 85 and over | 1.2% | 4.2% | 1.9% |
| space1 | | | |
| Race | | | |
| | Hebron, IL | Sterling, IL | United States |
| White | 72.0% | 67.1% | 59.4% |
| Black | 1.3% | 2.0% | 12.2% |
| Asian | 0.0% | 1.3% | 5.6% |
| Native American | 0.0% | 0.0% | 0.6% |
| Hawaiian, Pacific Islander | 0.0% | 0.1% | 0.2% |
| Other | 0.1% | 0.0% | 0.4% |
| Two or More Races | 1.6% | 3.5% | 3.2% |
| Hispanic | 25.1% | 26.0% | 18.4% |
| space2 | | | |
| Marriage & Family | | | |
| | Hebron, IL | Sterling, IL | United States |
| Married Population | 44.3% | 40.8% | 49.8% |
| Currently Married | 43.8% | 38.9% | 48.0% |
| Married but Separated | 0.6% | 1.9% | 1.8% |
| Single Population | 55.7% | 59.2% | 50.2% |
| Never Married | 38.2% | 38.4% | 33.8% |
| Divorced | 13.3% | 12.9% | 10.8% |
| Widowed | 4.1% | 8.0% | 5.6% |
| space5 | | | |
| Household Size | 2.83 | 2.24 | 2.60 |
| Households | 537 | 6,467 | 124,010,992 |
| Family Households | 411 | 3,698 | 80,755,759 |
| Married couple, w/children | 26.3% | 20.6% | 30.5% |
| Married couple, no children | 34.6% | 40.6% | 42.9% |
| Non Family Households | 126 | 2,769 | 43,255,233 |
| Single householder, w/children | 28.7% | 30.0% | 15.8% |
| Single householder, no children | 10.5% | 8.9% | 10.8% |